[Pyobjc-dev] ObjC exceptions, Python exceptions, the event loop

[Just v. R. <ju...@le...>]

I'm wondering about ObjC exceptions: if an app throws an exception,
could it be caught by the code that invokes the event loop? Hm,
considering the call stack, I would think so. If this is indeed so, I
would suggest to catch all exceptions in the AppKit.NSApplicationMain
wrapper and convert it to a Python exception. Since the main program is
a Python program, it makes sense for it to end as a real Python program
instead of "crashing".

Additionally, if the exception is OC_PythonException, the _original_
Python exception should be reraised, resulting in a decent traceback. It
would also allow us to catch exceptions raised by the event loop, and
simply continue if it wasn't fatal enough (whatever that means ;-).

Just